13601513449 has 2 divisors, whose sum is σ = 13601513450. Its totient is φ = 13601513448.

The previous prime is 13601513411. The next prime is 13601513461. The reversal of 13601513449 is 94431510631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13518247824 + 83265625 = 116268^2 + 9125^2 .

It is a cyclic number.

It is not a de Polignac number, because 13601513449 - 2¹¹ = 13601511401 is a prime.

It is a super-4 number, since 4×13601513449⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (13601513249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6800756724 + 6800756725.

It is an arithmetic number, because the mean of its divisors is an integer number (6800756725).

Almost surely, 2^13601513449 is an apocalyptic number.

It is an amenable number.

13601513449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13601513449 is an equidigital number, since it uses as much as digits as its factorization.

13601513449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 13601513449 in words is "thirteen billion, six hundred one million, five hundred thirteen thousand, four hundred forty-nine".